# Find the value of r so the line that passes through each pair of points has the given slope. (r, -5), (3, 13), m = 8

Find the value of r so the line that passes through each pair of points has the given slope. (r, -5), (3, 13), m = 8
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Sally Cresswell

1:
$m=\frac{{y}^{2}-{y}^{1}}{{x}^{2}-{x}^{1}}$
2:
$8=\frac{13-\left(-5\right)}{3-r}$
3:
$8=\frac{18}{3-r}$
$8\left(3-r\right)=18$
$24-8r=18$
$8r=6$
$r=\frac{6}{4}$